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Differential D26539 Diff 77461 sys/dev/ath/if_ath_tx_ht.c

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sys/dev/ath/if_ath_tx_ht.c

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* TODO: ensure this is only called for MCS rates. * TODO: ensure this is only called for MCS rates.
* *
* TODO: enforce MCS < 31 * TODO: enforce MCS < 31
*/ */
static int static int
ath_compute_num_delims(struct ath_softc *sc, struct ath_buf *first_bf, ath_compute_num_delims(struct ath_softc *sc, struct ath_buf *first_bf,
uint16_t pktlen, int is_first) uint16_t pktlen, int is_first)
{ {
#define MS(_v, _f) (((_v) & _f) >> _f##_S)
const HAL_RATE_TABLE *rt = sc->sc_currates; const HAL_RATE_TABLE *rt = sc->sc_currates;
struct ieee80211_node *ni = first_bf->bf_node; struct ieee80211_node *ni = first_bf->bf_node;
struct ieee80211vap *vap = ni->ni_vap; struct ieee80211vap *vap = ni->ni_vap;
int ndelim, mindelim = 0; int ndelim, mindelim = 0;
int mpdudensity; /* in 1/100'th of a microsecond */ int mpdudensity; /* in 1/100'th of a microsecond */
int peer_mpdudensity; /* net80211 value */ int peer_mpdudensity; /* net80211 value */
uint8_t rc, rix, flags; uint8_t rc, rix, flags;
int width, half_gi; int width, half_gi;
uint32_t nsymbits, nsymbols; uint32_t nsymbits, nsymbols;
uint16_t minlen; uint16_t minlen;
/* /*
* Get the advertised density from the node. * Get the advertised density from the node.
*/ */
peer_mpdudensity = MS(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY); peer_mpdudensity = _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
/* /*
* vap->iv_ampdu_density is a net80211 value, rather than the actual * vap->iv_ampdu_density is a net80211 value, rather than the actual
* density. Larger values are longer A-MPDU density spacing values, * density. Larger values are longer A-MPDU density spacing values,
* and we want to obey larger configured / negotiated density values * and we want to obey larger configured / negotiated density values
* per station if we get it. * per station if we get it.
*/ */
if (vap->iv_ampdu_density > peer_mpdudensity) if (vap->iv_ampdu_density > peer_mpdudensity)
▲ Show 20 Lines • Show All 90 Lines • ▼ Show 20 Lines if (pktlen < minlen) {
ndelim = MAX(mindelim, ndelim); ndelim = MAX(mindelim, ndelim);
} }
DPRINTF(sc, ATH_DEBUG_SW_TX_AGGR, DPRINTF(sc, ATH_DEBUG_SW_TX_AGGR,
"%s: pktlen=%d, minlen=%d, rix=%x, rc=%x, width=%d, hgi=%d, ndelim=%d\n", "%s: pktlen=%d, minlen=%d, rix=%x, rc=%x, width=%d, hgi=%d, ndelim=%d\n",
__func__, pktlen, minlen, rix, rc, width, half_gi, ndelim); __func__, pktlen, minlen, rix, rc, width, half_gi, ndelim);
return ndelim; return ndelim;
#undef MS
} }
/* /*
* XXX TODO: put into net80211 * XXX TODO: put into net80211
*/ */
static int static int
ath_rx_ampdu_to_byte(char a) ath_rx_ampdu_to_byte(char a)
{ {
Show All 23 Lines
* and per-peer limits in non-STA mode. * and per-peer limits in non-STA mode.
*/ */
static int static int
ath_get_aggr_limit(struct ath_softc *sc, struct ieee80211_node *ni, ath_get_aggr_limit(struct ath_softc *sc, struct ieee80211_node *ni,
struct ath_buf *bf) struct ath_buf *bf)
{ {
struct ieee80211vap *vap = ni->ni_vap; struct ieee80211vap *vap = ni->ni_vap;
#define MS(_v, _f) (((_v) & _f) >> _f##_S)
int amin = ATH_AGGR_MAXSIZE; int amin = ATH_AGGR_MAXSIZE;
int i; int i;
/* Extract out the maximum configured driver A-MPDU limit */ /* Extract out the maximum configured driver A-MPDU limit */
if (sc->sc_aggr_limit > 0 && sc->sc_aggr_limit < ATH_AGGR_MAXSIZE) if (sc->sc_aggr_limit > 0 && sc->sc_aggr_limit < ATH_AGGR_MAXSIZE)
amin = sc->sc_aggr_limit; amin = sc->sc_aggr_limit;
/* Check the vap configured transmit limit */ /* Check the vap configured transmit limit */
amin = MIN(amin, ath_rx_ampdu_to_byte(vap->iv_ampdu_limit)); amin = MIN(amin, ath_rx_ampdu_to_byte(vap->iv_ampdu_limit));
/* /*
* Check the HTCAP field for the maximum size the node has * Check the HTCAP field for the maximum size the node has
* negotiated. If it's smaller than what we have, cap it there. * negotiated. If it's smaller than what we have, cap it there.
*/ */
amin = MIN(amin, ath_rx_ampdu_to_byte(MS(ni->ni_htparam, amin = MIN(amin, ath_rx_ampdu_to_byte(_IEEE80211_MASKSHIFT(ni->ni_htparam,
IEEE80211_HTCAP_MAXRXAMPDU))); IEEE80211_HTCAP_MAXRXAMPDU)));
for (i = 0; i < ATH_RC_NUM; i++) { for (i = 0; i < ATH_RC_NUM; i++) {
if (bf->bf_state.bfs_rc[i].tries == 0) if (bf->bf_state.bfs_rc[i].tries == 0)
continue; continue;
amin = MIN(amin, bf->bf_state.bfs_rc[i].max4msframelen); amin = MIN(amin, bf->bf_state.bfs_rc[i].max4msframelen);
} }
DPRINTF(sc, ATH_DEBUG_SW_TX_AGGR, DPRINTF(sc, ATH_DEBUG_SW_TX_AGGR,
"%s: aggr_limit=%d, iv_ampdu_limit=%d, " "%s: aggr_limit=%d, iv_ampdu_limit=%d, "
"peer maxrxampdu=%d, max frame len=%d\n", "peer maxrxampdu=%d, max frame len=%d\n",
__func__, __func__,
sc->sc_aggr_limit, sc->sc_aggr_limit,
vap->iv_ampdu_limit, vap->iv_ampdu_limit,
MS(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU), _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU),
amin); amin);
return amin; return amin;
#undef MS
} }
/* /*
* Setup a 11n rate series structure * Setup a 11n rate series structure
* *
* This should be called for both legacy and MCS rates. * This should be called for both legacy and MCS rates.
* *
* This uses the rate series stuf from ath_tx_rate_fill_rcflags(). * This uses the rate series stuf from ath_tx_rate_fill_rcflags().
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